CN106456930A - Pressure controlled exhaust vent - Google Patents
Pressure controlled exhaust vent Download PDFInfo
- Publication number
- CN106456930A CN106456930A CN201580026246.9A CN201580026246A CN106456930A CN 106456930 A CN106456930 A CN 106456930A CN 201580026246 A CN201580026246 A CN 201580026246A CN 106456930 A CN106456930 A CN 106456930A
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- China
- Prior art keywords
- valve
- constructions
- film
- bias current
- valves
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/20—Valves specially adapted to medical respiratory devices
- A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
- A61M16/209—Relief valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/22—Carbon dioxide-absorbing devices ; Other means for removing carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
- A61M16/0816—Joints or connectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/42—Reducing noise
Abstract
A patient interface includes a mask body, an elbow, a connector and a conduit. Any one or more of the mask body, the elbow, the connector and the conduit includes a bias flow vent. The bias flow vent is configured to deform with the application of pressure but not fully collapse such that an orifice size defined by the bias flow vent can vary with the application of pressure.
Description
Technical field
The present disclosure relates generally to a kind of bias current air vent in CPAP system.More particularly, it relates to one
Kind of such air vent, described air vent be arranged and be configured to adjust bias current so that bias current wide scope operating pressure
Lower holding relative constancy.
Background technology
Suffocated by continuous Positive Airway Pressure (CPAP) flow generator systematic treating Obstructive Sleep and be related to forced air
It is delivered continuously to human airways via conduit and interface (for example, mask).Generally, interface is at least on nose and/or mouth
Or formed basic " seal " around nose and/or mouth.With patient respiratory, carbon dioxide gas cognition is gradually collected in conveying
In system.If do not checked during a period of time, the gathering of carbon dioxide can bring counter productive.
Content of the invention
The solution assembled for carbon dioxide is to provide one kind to wash away air vent.Wash away air vent can arrange
In mask system.Washing away air vent allows gas stream to be consistently discharged in air.Constant exhaust stream provides even
The continuous mechanism removing carbon dioxide, this stops carbon dioxide level from raising.
While the mechanism for removing carbon dioxide is provided, washes away air vent and also there are multiple balance portion (trade-
offs).Existing process is at present using the holes/apertures array with fixed dimension.Fixed dimension has the effect allowing gas bias current,
Described gas bias current raises with cpap pressure level and increases.The gas bias current being gradually increased implies the multiple of impact user
Parameter.
The bias current left by washing away air vent generally produces interference to the same bed companion of patient and/or patient.Interference is logical
Often show as two kinds of forms：Noise and draft.Changed by the bias flow rate that the change of cpap pressure level leads to and directly affect
The degree of these interference.Therefore, if in Installed System Memory in pressure oscillation, vibration interference may be produced.
Flow and humidity source (for example, air blast and humidifier) also can be affected.Increase bias current lead to physical size and
Energy consumption increases to meet peak flow demand (that is, the summation of the patient demand under the conditions of surge pressure and maximum bias current).
Form actual solution and not-so-practical solution to solve this situation be a considerable amount of research and development work
The theme made.But, however it remains room for improvement is solving relevant carbon dioxide is reduced or eliminated to be gathered in CPAP system
Problem.
Particular aspects are related to a kind of patient interface.Patient interface has main part, the size of described main part and shape
Shape is designed to surround the nose of user and/or mouth and be suitable to produce part substantially sealed off at least for user face.Patient
Interface also has connector, and described connector allows patient interface to be connected to gas delivery system.Patient interface also has ventilation
Hole, described air vent allows the inside of the main part from mask for the gas to flow through the outside of the main part arriving at mask, wherein,
Partial ventilation hole includes adjusting the facility of gas stream based on pressure applied.
In some constructions, the facility adjusting gas stream includes being configured with the aperture of change wall section thickness.
In some constructions, wall section thickness changes in the range of 50 microns to 400 microns.
In some constructions, the facility adjusting gas stream operates in the range of 1cm water column to 40cm water column.
In certain operations, the facility adjusting gas stream occurs in the case of so that deformable aperture is collapsed completely.
In some constructions, adjust gas stream facility include by one or more surfaces formed one or more lobate
Portion, and adjust the facility of gas stream and occur in the case that one or more of surfaces are not contacted with its own.
Particular aspects be related to a kind of with for conveying the valve that the system of CPAP therapy is used together.Valve includes valve seat and film.
Film has the first end limiting entrance opening.Valve seat has the second end limiting exit opening.The first end of film has
At least one sunk part and at least one projection, and the first end of film is constructed to respond to act on the pressure on film
The change of power and inwardly collapse, to change flow path size.
In some constructions, at least one sunk part described and at least one projection described are by the outer surface of film
Flexing (inflection) limited.
In some constructions, at least one sunk part described and at least one projection described are by the inner surface of film
Flexing limited.
In some constructions, at least one sunk part described and at least one projection described are by the change of film thickness
Limited；
In some constructions, at least one sunk part described and at least one projection described by film inner surface and
The change of the flexing at least one of outer surface and film thickness is limited.
In some constructions, at least one sunk part described includes lobes, and at least one projection described includes
Bridging part.
In some constructions, valve includes only two lobes and only two bridging parts.
In some constructions, valve includes only three lobes and only three bridging parts.
In some constructions, valve includes only four lobes and only four bridging parts.
In some constructions, valve includes the valve seat of triangle.
In some constructions, valve includes the valve seat of circle.
In some constructions, the entrance opening that valve seat can have the first geometry and be limited by film can have
Two geometries.In some such constructions, the first geometry is identical with the second geometry.In some such constructions
In, the first geometry is triangle and the second geometry is also triangle.In some such constructions, more than the first
What shape is different from the second geometry.In some such constructions, the first geometry is circular and the second geometric form
Shape is triangle.
In some constructions, the transition part between valve seat and the entrance opening being limited by film is nonlinear.At some this
In the construction of sample, transition part is arc.In some constructions, film can have：Part I, described Part I is with away from valve
Still symmetrical with respect to the valve seat nonlinear way transition of seat；And Part II, described Part II is not with right with respect to valve seat
The nonlinear way claiming is transitioned into entrance from Part I.
In some constructions, valve also includes thin slice, and described thin slice extends in the mouth being limited by the first end of film.
In some constructions, thin slice extends to the second end of valve seat from the first end of film.
In some constructions, valve also includes being arranged in the bias current material at the second end of valve seat.
In some constructions, bias current material includes multiple bias current holes.
In some constructions, bias current material includes diffuser.
In some constructions, valve array includes at least two valves in valve.
In some constructions, described at least two valves include two row valves.
In some constructions, two row valves nest together.
In some constructions, two row valves have the valve being arranged side by side.
In some constructions, described at least two valves include the valve of preassigned pattern.
In some constructions, valve array and mask combination, described valve array is installed on mask.
In some constructions, valve array is arranged in the seal casinghousing of mask.
In some constructions, valve array is arranged on the seal of mask.
In some constructions, valve array is arranged on the framework of mask.
In some constructions, mask includes exhaust manifolds and valve array is arranged in exhaust manifolds.
In some constructions, valve array and bend-head combination, valve array is installed on elbow.
In some constructions, valve array is installed on the covering being associated with elbow.
In some constructions, covering can be removed from elbow.
In some constructions, valve array is combined with swivel, and valve array is installed on swivel.
Described below is some actual selection schemes to improve current design.
Brief description
Some and the further feature of the present invention, aspect and excellent are described now with reference to the accompanying drawing of some preferred embodiments
Gesture, described embodiment is intended to explain and the unrestricted present invention, and wherein：
Fig. 1 is stressed to represent curve map using the bias current in the system of existing bias current air vent structure with applying；
Fig. 2 be using in accordance with a specific feature of the present invention, aspect and advantage and the bias current air vent structure arranging and construct
System in bias current stressed represent curve map with applying；
Fig. 3 be in accordance with a specific feature of the present invention, aspect and advantage and the stereogram of bias current valve arranging and construct；
Fig. 4 is the top view of the bias current valve of Fig. 3；
Fig. 5 is the schematic sectional view of the bias current valve of Fig. 3；
Fig. 6 is the zoomed-in view of a part for bias current valve of Fig. 3；
Fig. 7 be in accordance with a specific feature of the present invention, aspect and advantage and the stereogram of bias current valve arranging and construct；
Fig. 8 is the top view of the bias current valve of Fig. 7；
Fig. 9 is the top view as the bias current valve bearing Fig. 7 during higher pressure；
Figure 10 to Figure 13 is the cutting of different bias current valves with the lobes of varying number and/or different lobate cage structure
Face；
Figure 14 and Figure 15 be in accordance with a specific feature of the present invention, aspect and advantage and the bias current valve arranging and construct；
Figure 16 is the valve size and valve quantity curve map to pressure and the impact of loudness；
Figure 17 to Figure 24 is the different configuration being characterized with the multiple bias current valves in valve array；
Figure 25 is the bias current valve with bias current combination of materials；
Figure 26 and 27 shows the bias current valve with bend-head combination；
Figure 28 to 30 shows the mask combining with valve array；
Figure 31 is the curve to pressure and the impact of flow of various combination and every kind of combination of valve, bias current hole and diffuser
Diagram；
Figure 32 to 35 shows the combination illustrating for the curve producing Figure 31；
Figure 36 is the curve diagram to pressure and the impact of loudness for the combination of Figure 32 to 35；
Figure 37 to 41 shows the combination of the valve in CPAP system and other parts；
Figure 42 is the curve diagram of the impact of parallel bias current valve flow rate.
Specific embodiment
As described above, particularly unique feature of the present invention, aspect and advantage are related to provide bias current, described bias current is in CPAP system
Normal operating pressures scope makes flow rate produce the change of obvious very little.
Fig. 1 shows the performance of traditional bias current hole array under various cpap pressure levels.As can be seen that with pressure from
4cm water column increases to 20cm water column, and bias current increases about 100% (that is, increasing to about 42L/min from about 18L/min).Fig. 2 shows
Gone out in accordance with a specific feature of the present invention, aspect and advantage and the embodiment of constant bias current control system arranging and construct
Performance.The performance illustrating is under the impact of CPAP level of change.It is found that increasing from 4cm water column with pressure
To 20cm water column, bias current increases about 40% (that is, increasing to about 20L/min from about 13L/min).
By comparing shown by Fig. 1 and 2, in accordance with a specific feature of the present invention, aspect and advantage and arrange and construct
Constant bias current control system can strengthen the intensity of sound producing to leaving CPAP system with bias current and/or draft
Control.And, it is to adapt to the stream needed for phenomenon shown in Fig. 1 that described constant bias current control system reduces traffic sources/CPAP source
Amount expense (flow overhead).Because traffic sources/CPAP must be compensated for only by being gradually increased that bias current air vent leaves
Flow, so size and the traffic sources/CPAP in traffic sources/CPAP source must be increased with respect to the unit of desirable amount needed for
Energy.
Valve geometry
Fig. 3 show in accordance with a specific feature of the present invention, aspect and advantage and the bias current control valve 10 arranging and construct.Partially
Flow control valve 10 changes flow openings advantageously in pressure limit.In other words, increase with the pressure in system, by bias current control
The outlet for gas that valve 10 processed limits is shunk, thus reduction bias current compared with prior art bias current construction.
In some constructions, valve 10 can be formed by silicone rubber (or other suitable thermoplastic elastomer).Silicone has
There is hydrophobic property, described hydrophobic property is conducive to during use condensate is reduced or eliminated and is gathered among bias current control valve 10
Or on.Can be using the combination of any other suitable material or material.In some constructions, valve 10 has less flexibility
Partly can be formed by the first material, and valve 10 have bigger flexibility partly can be by with the first material resilience in comparison more
The second low material is formed.
Shown bias current control valve 10 includes valve seat 12.Valve seat 12 can include flange or edge.Arrangement in Fig. 3
In, for example, valve seat 12 is ring-type and can limit outer shroud.In other words, in the arrangement of Fig. 3, the construction base of valve seat
This is rounded.As shown in fig. 7, valve seat 12 needs not to be circle, but can have any other required shape.In some structures
In making, valve seat 12 can have smooth non-circular or non-cylindrical shape, and such as Fig. 7's is triangular shaped.The shape of valve seat
Can be different according to construction.By changing the shape of valve seat, it is adapted to the different geometries of surrounding structure.One
In a little constructions, using multiple valves and by making valve seat 12 shape triangular in shape, for example but without limitation, the valve that quantity increases
10 may be mounted on predetermined surface region.In single many valves construct the shape of valve seat 12 can two or more valves it
Between change, or the shape of valve seat 12 can be consistent between all valves in single many valves construct.
Valve seat 12 helps be coupled or connected to such part, and bias current control valve 10 is installed on described part.Consider
Expect for valve 10 to be attached to such part (being provided with valve thereon or wherein), it is possible to use any suitable construction.At some
In construction, it is impossible to remove from part (being provided with valve thereon or wherein) in the case of not notable destructive valve 10 and/or part
Valve 10.In some such constructions, valve seat 12 is formed and surrounding structure all-in-one-piece part.
Film 14 can connect in any suitable manner to valve seat 12.In some constructions, film 14 can be with valve seat 12
Form as one.Film 14 has relatively bigger flexibility compared with valve seat 12.With reference to Fig. 5, in shown construction, outlet 16 can
To be limited by valve seat 12, and entrance 18 can be limited by film 14.Entrance 18 and outlet 16 are along flow direction (that is, along valve 10
Central axial line) mutually axially bias.In some constructions, entrance 18 and outlet 16 can be axial under different operating pressures
Bias different distances.In some constructions, entrance 18 increases with the pressure in system and moves towards outlet 16.
In some constructions, for example, shown in Fig. 3, valve seat 12 and the entrance 18 being limited by film 14 can have different several
What structure (for example, the entrance 18 of circular valve seat 12 and triangle).In some constructions, for example shown in Fig. 7, valve seat 12
Can have similar geometry (for example, the entrance 18 of the valve seat 12 of triangle and triangle) with entrance 18.In some structures
In making, the transition part between valve seat 12 and entrance 18 is nonlinear (even if, opening being transitioned into triangle from triangle valve seat
Mouthful when, the cross section of wall is also curved and nonlinear change).For example can see this nonlinear in Fig. 3, Fig. 5 and Fig. 7
Construction.In some constructions, film 14 can have：Part I, but described Part I is with away from valve seat 12 with respect to valve
The symmetrical nonlinear way transition of seat；And Part II, described Part II is with respect to the asymmetric nonlinear way of valve seat
It is transitioned into entrance 18 from Part I.
For the size of flow path, entrance 18 has first size and entrance in a second situation in the first case
18 is less.That is, the first operating pressure lower inlet 18 in systems can have first size, and the second operation in systems
Under pressure (higher than the first operating pressure), entrance 18 can have second size less than first size.In other words, outlet 16 can
To have girth in first, entrance 18 can be limited by the edge 20 being formed on film 14, and wherein entrance 18 has the second inner circumferential
Long.In second, girth can be less than girth in first.In some constructions, entrance has opening, and described opening has three leaves
Shape portion 22 and aperture area is 18.5mm2.In such configuration, valve 10 can be used alone as single valve and in 5cm water column
Cpap pressure under transmit 15L/min initial flow.
As shown in figure 5, entrance 18 is arranged along such direction, flowing is from the beginning of the direction.Therefore, in shown construction
In, film 14 is positioned on the higher pressure side of valve seat 12.As shown in figure 5, at least a portion of film 14 can be with applying pressure
And deflection (for example, shown in phantom the deflection of valve 10).The deflection of film 14 is used for shrinking at least one of the flow channel by valve
Part.In shown construction, the deflection of film 14 is used for shrinking entrance 18 with respect to valve 10.In some constructions, film 14 along
Both direction deflection (that is, surround one or more wall inward deflection of entrance 18 opening to reduce the flow path by opening,
And entrance 18 is towards outlet axial movement).
As shown in figure 4, edge 20 can limit two or more lobes 22.Each lobes 22 all can utilize bridge
Socket part divides 24 to be connected to the lobes 22 adjoined.The concave region of lobes itself is (that is, with respect to leading to that valve 10 limits
The central axial line depression on road).Bridging part 24 itself can be in raised zones (that is, with respect to the path of valve 10 restriction
Central axial line protrudes).
The lobes of any number can be used.Have been found that more than one lobes are easier to set than single lobes
Meter and manufacture, to obtain repeatability and the controllable closing needed for opening.Figure 10 shows three lobate cage structures.Figure 11 and 12
Each of all illustrate two lobate cage structures.Figure 13 shows four lobate cage structures.From stability viewpoint and set
It has been found that three lobes are favourable constructions from the point of view of the convenience viewpoint of meter and manufacture.
In some constructions, lobes 22 can be arranged symmetrically around central axial line CA.In some constructions, each leaf
The top in shape portion 22 can be with central axial line CA at a distance of equal distance.In other words, the top of each lobes 22 and the axis of centres
The distance that line CA is spaced apart is equal with the distance that central axial line is spaced apart with the top of each of other lobes 22.One
In a little constructions, the top of each lobes 22 can be with respect to the top of any lobes 22 diametrically and central axial line CA
It is equally spaced.In some constructions, the top of each lobes 22 is all equally spaced with central axial line CA and often
Angle between individual lobes is all equal for all of lobes 22.In other words, lobes 22 are around central axial line CA
It is symmetrically spaced out.In some constructions, lobes 22 are not symmetrically spaced out all around central axial line CA, but with one
Plant or multiple symmetric pattern is spaced apart.Other constructions are also feasible.
In some constructions, internals 26 can be positioned in valve 10.Internals 26 can be with described here
What valve construction is used together.Internals 26 can be positioned in the region of entrance 18.Internals 26 can in some constructions
To be rigid pipe.Internals 26 provides minimal flow passage, thus when film 14 is completely collapsing at internals 26 surrounding,
Internals will maintain flow path.So, in some constructions, internals 26 is the single pipe with interior tube chamber 28.?
In some constructions, internals 26 is many posts, and described many posts are by being reduced or eliminated the possibility completely closing valve 10
Maintain the flow path by valve 10.In fact, internals 26 can be any as thin slice to be in other closures in valve
The part that at least a portion valve is opened is maintained when in position.The opening being retained can be occurred with CPAP machine or other flowing
Necessary flow under the maximum operating pressure of device is relevant.
With reference to Figure 14 and 15, shown internals 26 is installed to supporting construction 30.Supporting construction 30 can be not notable
Internals 26 is supported in the case of flowing through the flowing of valve 10 by ground impact to be located in place.Shown supporting construction 30 is wrapped
Include one or more cross members 32.In shown construction, internals 26 can from entrance 18 extend to outlet 16 and
Can be along the length support of internals 26 at any desired position.In some constructions, supporting construction 30 can be determined
Position is in valve seat 12.In some constructions, supporting construction 30 may be positioned such that and adjoins outlet 16.
One or more contiguous zones of valve can increase pressure with flow generator and close at internals 26
On outer surface.By using internals 26, the flow path by valve 10 can be maintained.This construction can be reduced or eliminated
Flow (this for example may occur) is inverted, completely closes in high pressure or is excessively limited in high pressure to valve 10 when user coughs
Possibility.In some constructions, internals 26 can be formed by the material identical material with the remainder of valve 10.?
In some constructions, internals 26 can be formed by the material different from the material of the remainder of valve 10.In some constructions,
Internals 26 can have and the material identical wall thickness for film, but the wall thickness of film be enough to maintain the flowing road by film
Footpath is opened.In some constructions, internals 26 can be formed by with the material identical material for forming valve seat 12.
In the construction being characterized at this moment, surround shape and/or the change of opening (being limited by entrance 18) with internals 26
Change thickness and/or rigidity can help possibility that valve 10 completely collapse is reduced or eliminated, and can help be reduced or eliminated
Valve 10 adheres the possibility of cut out in use.In the construction without internals 26 and have internals 26
In construction, wall thickness can change (referring to Fig. 6) around given cross section；Wall thickness can also be sent out along the main shaft of valve 10
Raw change (referring to Fig. 5).The shown change of wall thickness contributes to providing smooth constraint mechanism in the range of operating pressure, for
Treatment sleep apnea or other respiratory care patient.
Referring again to Fig. 6, in some constructions, the wall thickness of film can at edge 20 and/or near change.One
A little construct, the wall thickness of film can at edge 20 and axially along film at least a portion in the direction of outlet outer edge 20
On change.Show this wall thickness change in the cross section of Fig. 5, its mesospore is tapered from valve seat 12 to entrance 18.
Also as shown in figures 6 and 8, for example, the wall being limited by film 14 can at lobes 22 relatively thicker and at bridging part 24
Relatively thinner.The possibility of this construction controlled entrance 18 of collapsing when increasing on the outer wall that pressure is applied to film 14.
If the thickness at bridging part 24 is blocked up, the possible deformation extent of valve 10 is less and may close insufficient,
And if the thickness at bridging part 24 is excessively thin, then the excessive and possible closure degree of the possible deformation extent of valve 10 is also excessive.?
In some silicone rubbers construction, the wall section of the valve 10 of construction for relatively thicker part may be at 100 microns micro- to 400
In the range of rice, and it is directed to relatively thinner part and may be in the range of 50 microns to 300 microns.In the construction of Fig. 6,
The top of lobes 22 can have 300 microns of thickness, and the central region of bridging part 24 can have 200 microns of thickness
Degree.Transition part (that is, the lobes 22 of depression and protrusion between the more thin section of bridging part 24 and thicker lobes 22
Transition part between bridging part 24) can help against valve 10 and collapse.If the external diameter of lobes 22 is decreased to from 1.3mm
1.2mm or 1.25mm, then the valve 10 of Fig. 6 be easy to very much collapse.The center of the internal diameter of sunk part 22 in the valve 10 of Fig. 6 and external diameter
Center along longitudinal axis bias 0.1mm, described longitudinal axis from the center of opening extend.
For example shown in Figure 12, the whole periphery defining the wall of lobes 22 and bridging part 24 around edge 20 of film 14
Can have uniform thickness.In some constructions, geometry can be adjusted to obtain required feature of collapsing.One
A bit in such construction, material can change, with more firm part is provided in lobes 22 and in bridging part 24
There is provided with more flexible part.Can be obtained this using these or any other appropriately combined of any other appropriate structuring
The valve of sample, as described herein, described valve is collapsed on itself at least in part.
Lobes 22 provide rigidity, so that valve under elevated pressure conditions inverted possibility is reduced or eliminated.However, it is overall
On, the rigidity of film 14 is by the thickness in lobes 22, the profile of wall, the height of valve 10 and the material property institute for manufacturing valve
Limit.As shown in FIG. 8 and 9, valve 10 deforms by this way so that flow channel narrows, thus reduce to pass through valve 10
Traffic level.In fig. 8, valve is shown as there is not operating pressure (that is, 0cm water column), and in fig .9, for example valve is shown as
It is under the pressure more than 1cm water column.As shown in figure 9, in the case of pressure is applied on film 14, thin wall section becomes
Shape, this leads to flow channel change, the cross-section variation limiting by lobes 22, and this is then based on the pressure reduction on valve 10
Changing can be by the flow rate of flow channel, and described flow channel is limited by lobes 22.By the part from relative thick
Become the part (or firmer be changed into more flexible) of relative thin, the property of valve 10 can be adjusted for specific operation pressure limit
Energy.In some constructions, not exclusively collapse in the range of nominal operating pressure in one or more deformable apertures.In some structures
In making, each lobes can include one or more surfaces and one or more of surface is in nominal operating pressure scope
Inside do not contact with its own.Therefore, one or more lobes, bridging part and variable thickness at least can partly limit base
Adjust the facility of gas stream in the pressure applying.
Valve array
As shown in figure 42, can close to the flow behavior of single bigger valve, but use multiple little using multiple little valves 10
Valve 10 can reduce noise with respect to using the single valve 10 with same throughput.This is because multiple little flow restrictors
By leading to, the pressure drop on each valve is little, thus leading to produce less disturbance and less noise.This is in the curve diagram of Figure 16
In illustrated.As illustrated, under the pressure effect increasing, in accordance with a specific feature of the present invention, aspect and advantage and arrange
It is proved to sound with the single big valve of construction and be more than two little valves.And, the sound of two less valves of data display increases degree
Increase degree significantly less than the sound of the bigger valve illustrating.
Referring now to Figure 17 to 24, any construction of above-mentioned valve 10 can be used in valve array 40.For the valve in array
10 can be miniaturization with respect to single valve 10.For clarity, the construction constituting the valve 10 of valve array 40 can be consistent
Or construction can be miscellaneous.In some valve arrays 40, valve 10 is constructed having the field in valve array 40
In consistent same operation feature.In some valve arrays 40, one or more of valve 10 can be configured to grasp in identical
Make to show different from each other under pressure condition.In some constructions, 20 valves will be used for providing about 22mm2Approximately transversal
Face area.Using the valve of other quantity and can use other cross-sectional areas.
With reference to Figure 17, show many valve members 42.Many valve members 42 include the array 40 of valve 10.Valve 10 structure as described above
Make.Shared valve seat 12 connection valve 10 in shown construction.In some constructions, shared valve seat 12 can be formed as connecting or mutual
Multiple parts even.In some constructions, the valve seat 12 of each valve all may be received in as share valve seat the container of plate or
In opening.Any other construction can be used.
With continued reference to Figure 17, in shown construction, valve 10 is spaced apart with symmetric pattern.The spin orientation of valve 10 makes two
Individual valve 10 rotates 180 degree with respect to other two valves 10.In other words, the top of the lobes 22 of two valves 10 points to other two
The top of the lobes 22 of valve 10.In some constructions, four valves 10 can be oriented so that lobes of each valve 10
The center of the 22 many valve members of sensing.Other orientations of valve 10 are also feasible.
Referring now to Figure 18, the shown array 40 of valve 10 is shown on many valves insert 44.Many valves insert 44 is permissible
Including the valve 10 of any requirement, to provide required traffic level.In shown construction, many valves insert 44 includes two
Ten valves 10.In shown construction, valve is arranged to four row five row.In shown construction, valve 10 is fixed also along single direction
To.Other constructions are feasible.
Many valves insert 44 can be formed by any suitable material in any suitable fashion.For example, in some structures
In making, many valves insert 44 can be formed by homogenous material.In some such constructions, entirely many valves insert 44 can be by
The material of such as silicone or any suitable thermoplastic elastomer are formed.The construction of Figure 18 is formed by single this material completely.
With reference to Figure 19, in addition to the many valves insert 44 shown in Figure 19 includes base material 46, shown many valves insert
44 is identical with the many valves insert 44 shown in Figure 18.Base material 46 can be with for formed valve 10 material identical material or
Person can be different materials.In some constructions, base material 46 provides the rigid valve seat of the valve 10 for many valves insert 44.
Figure 20 schematically shows another many valve members 42.Many valve members 42 shown in Figure 20 include multirow valve 10.
Valve 10 has the first valve row having the first orientation and the second valve row having opposite orientation；The valve 10 of two row adjacent valve row is embedding
Set.By nested valve 10, it is possible to obtain bigger valve density.
Referring now to Figure 21, show the another valve array 40 on many valve members 42.Valve 10 in shown construction is to have
The valve row mode arrangement of equal number valve 10.Shown construction is characterized by three row valves 10, wherein, the valve 10 of middle Central Bank
Quantity is bigger than layman.Especially, middle Central Bank has an additional valve 10 in each end of this valve row.
Figure 22 shows the valve array 40 on many valve members 42.Valve 10 in valve array 40 has nonlinear arrangement scheme.
Valve 10 can be according to can be arranged by the predetermined mode of designer.
Figure 23 shows another valve array 40 on many valve members 42.In shown construction, valve 10 is arranged in different rows
In.Central two row have nine valves 10 being arranged side by side.In each, the side of Central Bank is center row, and the side of center row is then
Layman.Each center row includes seven valves 10.Each layman includes three valves 10.Valve 10 in layman can with middle Central Bank in
Valve 10 is aligned, and the valve 10 in center row can bias with respect to the valve in middle Central Bank and layman.
Figure 24 shows the another valve array 40 on many valve members 42.In shown construction, valve 10 forms two and interlocks
Line.Valve 10 can be used for the periphery of the part of such as mask system etc..
Any one in valve construction described here can be incorporated in breathing mask or associated components.For example, valve array
40 can be incorporated in nasal mask, pillow mask, full-face mask, conduit, elbow etc..Furthermore it is possible to will be whole for traditional bias current hole
Close in valve array so that bias current hole is applied in single array or part together with valve 10.In some constructions, the side of valve row
Face is bias current hole rows.In some constructions, row can comprise valve and bias current hole.Any other suitable construction can be used.
The system unit being characterized with valve
In the following discussion, outside unless otherwise expressing, term " valve " will include " valve array ".In view of need allow from
Carbon dioxide is evacuated, bias current control valve 10 can be positioned at any suitable position, titanium dioxide in the system in system
Carbon is introduced by expiration.Valve 10 is not preferably the unique flow path between patient and flow generator (for example, CPAP).Change speech
It, air stream must have and marches to patient from flow generator and do not flow through the path of valve 10.Substituting not existing
In the case of flow path, the pressure drop on valve 10 will imply that patient does not receive the pressure of regulation.Valve 10 can be placed on
At any position in system, the configuration of bias current air vent can be set within the system.In some constructions, valve 10 can be arranged on
The front or behind of bias current air vent configuration or the replacement scheme as the configuration of bias current air vent.Additionally, valve 10 may be positioned so that
Allow the axis of valve 10 angled with respect to surface perpendicular to surface or described axis, to better control over from valve 10
The direction of the flow spreading out of.
In some constructions, valve 10 can be positioned between patient and bias current hole.However, in some constructions, this fixed
Position can lead to increase noise and/or reduction or infringement valve performance.For example, wherein bias current hole (for example, the cross-sectional area in bias current hole
Less) on pressure drop ratio valve 10 on the bigger system of pressure drop can reduce the performance of valve 10.In order to solve this problem, valve 10 can
To arrange less rigidity.In some constructions, the bigger system of the pressure drop on the pressure drop ratio bias current hole on valve can lead in sky
Gas blowout is mapped on surface and is produced by noise during bias current hole and increases.This can be bigger by arranging between bias current hole and valve
Room and to be reduced by making pressure drop between this two parts minimize.In some constructions, during this can be by providing
Empty frames frame or guard shield, to solve, can be aerated by described hollow frame or guard shield.
With reference to Figure 25, valve 10 be may be positioned so that and is in line with one or more bias current holes 50.By by valve 10 be positioned to
Bias current hole 50 is in line, and bias current hole 50 is so that the sound of bigger valve 10 quiets down.Because with used in above-mentioned valve array 40
In less valve compare bigger valve 10 and be easily manufactured, so this is especially beneficial.Valve array 40 can be positioned to and bias current hole
50 are in line.Substitute or in addition to being in line with bias current hole 50, it is possible to use diffuser.
In some constructions, bias current control valve 10 can be positioned on interface.In some constructions, bias current control valve 10 can
To be positioned on mask.In some constructions, bias current control valve 10 is positioned in the connector between conduit and mask
On.In some constructions, bias current control valve 10 can be positioned on the conduit being connected to mask.Bias current control valve 10 can with appoint
What suitable face shield configuration (not shown) is used together.Mask can include main part, the size of described main part and shape
Shape is designed nose and/or mouth to surround user.Mask may be adapted at least to produce substantially sealed off for user's face
Part.The main part of mask can have inside and outside.Mask can include allowing patient interface to be connected to gas delivery system
The connector of system.Bias current control valve 10 allows the internal flow of the main part from mask for the gas to the main part of mask
Portion.
Referring now to Figure 26 and 27, valve 10 can be installed on connecting-piece structure (for example, elbow 60).As illustrated, it is curved
60 can include opening 62.Opening can receive at least a portion of valve 10.In some constructions, valve 10 is installed to covering
64.Covering 64 can for good and all be fixed or be removably attached on elbow 60.In some constructions, valve 10 and covering 64
Can be connected by post forming etc..In some constructions, bias current material 66 can be installed on covering 64 or use it
Its method is located so that the flow flowing through valve 10 additionally flows through bias current material 66.Bias current material can be by bias current hole or diffuser
The group of the compositions such as scrim materials.Although shown construction is located on elbow, similar construction can differently be used for for example
On mask, on conduit or on connector.
Referring now to Figure 28 to 30, show mask 70, described mask and the valve array arranged as described above and construct
40 is integral.Mask 70 generally comprises seal casinghousing 72 and buffer sealing part 74.
In shown construction, seal casinghousing 72 include as mentioned above but many valves insert 44 of not limited to this.At some
In construction, many valves insert 44 can be removable (for example, clipping in correct position).Many valves insert 44 can be molded into
(for example, it is molded in seal casinghousing 72) in mask 70.As described above, valve 10 can be by flexible valve seat supports or can be by more
The substrate support of rigidity.In some constructions, substitute the many valves insert 44 being characterized with multiple valves 10 is, it is possible to use single
One valve 10.In some constructions, substitute a valve array 40 is, it is possible to use more than one valve array 40 is (that is, more than one
Individual valve group).
Not using bias current material so that in the case of valve 10 or multiple valve 10 be directly vented to air, many valves 10 are excellent
Choosing.However, in shown construction, pumping chamber 76 is limited between many valves insert 44 and bias current material 66.Pumping chamber 76
Can be than shown bigger in some constructions.In addition, hollow frame can be included, valve or valve array are vented to hollow frame
In.
With continued reference to Figure 31, the curve providing illustrates the embodiment various streams at a variety of pressures for mask 70
Amount, the embodiment of described mask includes：(1) bias current hole and big valve；(2) big valve；(3) bias current hole；(4) diffuser material and big
Valve.These constructions are shown in Figure 32 to 35.As curve is illustrated, setting bias current hole changes the performance of mask 70.
Maximum flow rate with do not exist and valve straight bias current hole in the case of flow rate generally equalized, but until apply higher
Till pressure, flow just can be gradually reduced.Therefore make bias current hole and valve be in line to be improved by changing valve construction,
And this not necessarily can lead to reduce the performance of mask 70.
With reference to Figure 36, the curve providing illustrates the identical embodiment being directed to the mask 70 such as discussing directly above not
With the different loudness data points under pressure.As it can be seen, for the noise reducing valve 10, being preferably incorporated to diffusion at valve rear
Equipment material.
Figure 37 shows another construction, and wherein many valves insert 44 is positioned on elbow 60.This construction can with Figure 28 extremely
Construction shown in 30 is similar to and can comprise identical element：Valve 10, valve array 40, many valves insert 44, bias current material
66 and draft chamber 76.In shown construction, as mentioned above but and be confined to this, elbow 60 includes many valves insert 44.One
In a little constructions, many valves insert 44 can be removable (for example, clipping at suitable position).Many valves insert 44 can be with mould
Make in elbow 60.As described above, valve 10 can be by flexible valve seat supports or can be by more rigid substrate support.At some
In construction, substitute the many valves insert 44 being characterized with many valves 10 is, it is possible to use single valve 10.In some constructions, replace
Generation one valve array 40 be, it is possible to use more than one valve array 40 (that is, more than a valve group).
Do not using bias current material thus in the case of valve 10 or multiple valve 10 be directly vented to air, many valves 10 are excellent
Choosing.However, in shown construction, draft chamber (but the not shown draft chamber with mask embodiment is similar) is limited to many valves
Between insert 44 and bias current material 66.Hollow frame can be included, valve or valve array are vented in described hollow frame.
Figure 38 is shown in which that auxiliary exhaust pipe 80 can arrange the construction on mask 70.Auxiliary exhaust pipe 80 can be
The end of blast pipe 80 includes valve 10.Valve 10 can limit exhaust stream.The benefit that auxiliary exhaust pipe 80 provides together with valve 10 is
Divulge information at a distance from user.For example, it is being considered as less to cause to perplex far from, valve noise.In some constructions, auxiliary
Exhaust-assisting pipe 80 can be advanced along at least a portion of supply pipe 82.In some constructions, blast pipe 80 can be in air inlet pipe
Advance in 82 side.In some constructions, blast pipe 80 can be coaxially located in air inlet pipe 82.In some constructions, arrange
Tracheae 80 can surround at least a portion of air inlet pipe 82.Other constructions are also feasible.
With reference to Figure 39, show the another construction for mask 90.Mask 90 includes framework 92, and mask seal part 94 is permissible
It is fixed to described framework.The framework 92 of mask can include annular element 96.Annular element 96 can at least partly about receive curved
The pod 98 of head, connector, conduit etc..Annular element can be provided with one or more valves 10.In some constructions, some little valves
10 can be arranged in around annular element 96.By separately each valve, the interference between the air that adjacent valve flows out can be reduced, by
This this reduces disturbance and noise.In some constructions, valve can be formed as one with annular element 96 or other mounting structure.?
In some constructions, annular element 96 or other mounting structure can be formed (for example, post forming) and be integrated with framework 92.At some
In construction, annular element or other mounting structure can be removably attachable to framework 92.In some constructions, annular element or other
Mounting structure can be formed separately with framework 92 and can be fixed to framework in any suitable manner.
With reference to Figure 40, show the construction of mask 90, wherein valve 10 is positioned on mask seal part 94.Because mask seal
Part 94 is generally formed by silicone rubber or other similar material, so valve 10 can be integral with mask seal part 94 and thus
Decrease manufacturing step.In certain embodiments, valve 10 can be gathered on the specific region of mask seal part 94 together.One
In a little constructions, one group of valve 10 can be arranged on each lateral side of mask seal part 94.In some constructions, can be in face
One group of valve 10 is arranged on the top of shield closure 94.In some constructions, one can be arranged on the bottom of mask seal part 94
Group valve 10.Can also be using any combinations of these groups.In some constructions, each valve 10 in arbitrarily single group all can edge
The arrangement of single direction so that being derived from the flowing of valve 10 along same direction.Further, it enables valve group alignment is by providing for letter
Change the single drawing plane (draw plane) of molding and advantageously simplify manufacture.
Referring now to Figure 41, one or more valves 10 can be incorporated in swivel connector 100.Swivel connector 100 can
To connect the conduit to mask.Swivel connector 100 can include outward flange 102.Outward flange 102 receives internals 104.Logical
Air compartment 106 can be limited between outward flange 102 and internals 104.For example valve 10 can be arranged in internals 104 weeks
Enclose so that flow is directed in draft chamber 106 valve.Can also be using other suitable constructions.
Although the invention has been described with respect to specific embodiments, but for those skilled in the art
Obvious other embodiments are also in the scope of the present invention.Therefore, it can without departing substantially from the spirit and scope of the present invention
On the premise of make various changes and modifications.For example, it is possible to relocate various parts as desired.And, put into practice the present invention
And all features of non-required, aspect and advantage.Therefore, the scope of the present invention is only determined by the claims that follow.
Claims (19)
1. a kind of with for conveying the valve that the system of CPAP therapy is used together, described valve includes valve seat and film, and film has restriction
The first end of entrance opening, valve seat has the second end defining exit opening, and the first end of film has at least one
Individual sunk part and at least one projection, and the first end of film is configured in response to acting on pressure on film
Change and inwardly collapse, to change the size of flow path.
2. valve according to claim 1, wherein, at least one sunk part described and at least one projection described by
Flexing on the outer surface of film is limited.
3. valve according to claim 1, wherein, at least one sunk part described and at least one projection described by
Flexing on the inner surface of film is limited.
4. valve according to claim 1, wherein, at least one sunk part described and at least one projection described by
The change of film thickness is limited.
5. valve according to claim 1, wherein, at least one sunk part described and at least one projection described by
The change of the flexing at least one of the inner surface of film and outer surface and film thickness is limited.
6. valve according to claim 1, wherein, at least one sunk part described includes lobes, described at least one
Projection includes bridging part.
7. valve according to claim 6, wherein, valve includes only two lobes and only two bridging parts.
8. valve according to claim 6, wherein, valve includes only three lobes and only three bridging parts.
9. valve according to claim 6, wherein, valve includes only four lobes and only four bridging parts.
10. valve according to claim 1, wherein, valve includes the valve seat of triangle.
11. valves according to claim 1, wherein, valve includes the valve seat of circle.
12. valves according to claim 1, valve also includes thin slice, and described thin slice extends to and limited by the first end of film
In mouth.
13. valves according to claim 16, wherein, thin slice extends to the second end of valve seat from the first end of film.
14. valves according to claim 1, valve also includes being arranged in the bias current material at the second end of valve seat.
15. valves according to claim 14, wherein, bias current material includes multiple bias current holes.
16. valves according to claim 14, wherein, bias current material includes diffuser.
A kind of 17. valve arrays, described valve array includes at least two valves according to any one of claim 1 to 16.
18. valve arrays according to claim 17, wherein, this at least two valve includes two row valves.
19. valve arrays according to claim 18, wherein, described two row valves nest together.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462000163P | 2014-05-19 | 2014-05-19 | |
| US62/000,163 | 2014-05-19 | ||
| PCT/IB2015/053666 WO2015177716A1 (en) | 2014-05-19 | 2015-05-19 | Pressure controlled exhaust vent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106456930A true CN106456930A (en) | 2017-02-22 |
| CN106456930B CN106456930B (en) | 2020-08-11 |
Family
ID=54553495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580026246.9A Active CN106456930B (en) | 2014-05-19 | 2015-05-19 | Pressure controlled exhaust vent |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US10953190B2 (en) |
| EP (2) | EP3888729A1 (en) |
| CN (1) | CN106456930B (en) |
| AU (3) | AU2015262953B2 (en) |
| SG (2) | SG10201810222TA (en) |
| WO (1) | WO2015177716A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD828917S1 (en) * | 2015-09-25 | 2018-09-18 | Fisher & Paykel Healthcare Limited | Vent diffuser |
| USD784515S1 (en) | 2015-09-25 | 2017-04-18 | Fisher & Paykel Healthcare Limited | Headgear |
| USD784516S1 (en) | 2015-09-25 | 2017-04-18 | Fisher & Paykel Healthcare Limited | Face mask frame |
| USD800895S1 (en) | 2015-09-25 | 2017-10-24 | Fisher & Paykel Healthcare Limited | Face mask cushion |
| CN117561094A (en) * | 2021-07-09 | 2024-02-13 | 瑞思迈私人有限公司 | Airflow control structure for respiratory therapy system |
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2015
- 2015-05-19 CN CN201580026246.9A patent/CN106456930B/en active Active
- 2015-05-19 EP EP21163903.4A patent/EP3888729A1/en active Pending
- 2015-05-19 WO PCT/IB2015/053666 patent/WO2015177716A1/en active Application Filing
- 2015-05-19 SG SG10201810222TA patent/SG10201810222TA/en unknown
- 2015-05-19 SG SG11201609221TA patent/SG11201609221TA/en unknown
- 2015-05-19 AU AU2015262953A patent/AU2015262953B2/en active Active
- 2015-05-19 US US15/312,135 patent/US10953190B2/en active Active
- 2015-05-19 EP EP15796260.6A patent/EP3145570B1/en active Active
-
2020
- 2020-04-30 AU AU2020202846A patent/AU2020202846B2/en active Active
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2021
- 2021-01-21 US US17/154,782 patent/US20210138183A1/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3888729A1 (en) | 2021-10-06 |
| SG11201609221TA (en) | 2016-12-29 |
| WO2015177716A1 (en) | 2015-11-26 |
| US20210138183A1 (en) | 2021-05-13 |
| EP3145570A4 (en) | 2018-01-24 |
| AU2015262953B2 (en) | 2020-02-06 |
| US10953190B2 (en) | 2021-03-23 |
| US20170087329A1 (en) | 2017-03-30 |
| EP3145570A1 (en) | 2017-03-29 |
| AU2022203660A1 (en) | 2022-06-23 |
| SG10201810222TA (en) | 2018-12-28 |
| CN106456930B (en) | 2020-08-11 |
| AU2015262953A1 (en) | 2016-11-17 |
| AU2020202846B2 (en) | 2022-06-16 |
| AU2020202846A1 (en) | 2020-05-21 |
| EP3145570B1 (en) | 2021-03-31 |
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